Idler gear and HP/RPM
Turbo Mini Forums

Hi!

What's the limit for helical idler gears?

Anyone thought about pining the thrust washers in place to prevent them spinning under load? Maybe with a bronce washer with a lock tab (pretty much like the laygear's thrust washer) between case/pined washer & idler gear? Or does a helical primary gear have similar limits to the idler gear?

Your thoughts? I want to avoid the noisy S/C gears... But don't ask me what power I'm aiming at - I simply don't know yet :)

Cheers,
Jan

PS: anyone ever though about using the fron oil galery to sort of make a 'spray' lubrication for the transfere gears? :)

Edited by Asphalt on 27th Apr, 2010.

[X] nail here for new monitor

you can block the oil pressure relief valve, and divert the oil to above the primary, i think harry tried pressure feeding the idler bearings a few years back, but has since completely re-engineered it, terry is trying replacing the thrusts with radial roller bearings, and there is someone else im missing, but cant remember who?

so yes, lots of different approaches to mull over

"Turbo's make torque, and torque makes fun"

"did you know you can toast potato waffles?"

http://www.turbominis.co.uk/forums/index.p...tid=248104&fr=0

pin the thrusts to stop them spinning ???

I know its a long time ago. But I broke plenty of gear boxes, diffs, casings, a few straight cut gears....

And never once had a problem with standard A+ idlers. And around the 2-3 years I was driving the car, I was doing around 40k a year...most of it quite enthusiastically lol

Hence all the other failures
Wouldnt have as much power as some of the modern stuff though, although was running over 20psi on a Cossie based T3
It did feel like decent power/torque.

9.85 @ 145mph
202mph standing mile
speed didn't kill me, but taxation probably will

Edited by Asphalt on 28th Apr, 2010.

[X] nail here for new monitor

(Stupid laptop - see one down)

Edited by mowog on 28th Apr, 2010.

Hi Jan,

The usual approach to this is a bit of a different set up. It uses a fixed shaft and tapered roller bearings in the gear itself.

Fairly simply and highly effective (I've never heard of one of these giving any trouble).

Cheers

WHAT ?! Pictures please

i think hes referring to the usual timpken type paul

"Turbo's make torque, and torque makes fun"

"did you know you can toast potato waffles?"

http://www.med-engineering.co.uk/product_d...86&vlang_id=130

Does the MED Roller idler come with the staples too?

But the MED setup is a Roller Bearing Mowog seems to be refering to some kind of gear with a number of Tapered Roller bearings!! in the gear

If something is worth doing, it's worth doing half of.

What is this better than two roller bearings as standard?

Fastest 998 mini in the world? 13.05 1/4 mile 106mph

[X] nail here for new monitor

thats how the jkd roller idler has always been hasnt it?

thats a rhetorical question btw as im sat looking at one now :)

"Turbo's make torque, and torque makes fun"

"did you know you can toast potato waffles?"

Something like this ?

"So wat we gonna do tonight Brain?"
"Same thing we do evernight Pinky!"
"Try to take over the world!"

yarp

"Turbo's make torque, and torque makes fun"

"did you know you can toast potato waffles?"

Edited by mowog on 28th Apr, 2010.

I really would love to see a pic of that mowog sounds very intresting ?

O/T

Out of interest, is 24/30/24 = 1:1?

id say up around 200 to 210 lbs/ft with the intercooler working colin.

at santa pod ,i had massive clutch slip at 90 mph ,whereas no slip at all on the rollers with no ic cooling .

Medusa + injection = too much torque for the dyno ..https://youtu.be/qg5o0_tJxYM